package com.example.demo.common;

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.HashMap;

@ResponseBody
@ControllerAdvice
public class MyExceptionAdvice {
    @ExceptionHandler(NullPointerException.class)
    public HashMap<String,Object> doNullPointerException(NullPointerException e){
        HashMap<String,Object> result = new HashMap<>();
        result.put("code",-1);
        result.put("msg","空指针: "+e.getMessage());
        result.put("data",null);
        return result;
    }

}
